#1F2C73#1F2C73

#1F2C73 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.0% C 0.123 H 270.3°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C73
RGB	rgb(31, 44, 115)
HSL	hsl(231, 58%, 29%)
HSV	hsv(231, 73%, 45%)
CMYK	cmyk(73%, 61.7%, 0%, 54.9%)
CIE-LAB	lab(21.32, 20.81, -42.54)
CIE-LCH	lch(21.32, 47.36, 296.07°)
OKLab	oklab(32.98% 0.0007 -0.1226)
OKLCH	oklch(32.98% 0.123 270.3)
XYZ	xyz(4.5592, 3.3300, 16.6188)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C73 #73661F

analogous

#1F5673 #1F2C73 #3C1F73

triadic

#1F2C73 #731F2C #2C731F

tetradic

#1F2C73 #731F56 #73661F #1F733C

square

#1F2C73 #731F56 #73661F #1F733C

split-complementary

#1F2C73 #733C1F #56731F

monochromatic

#060918 #121A43 #1F2C73 #2C3EA3 #4156CC

Accessibility & contrast

On white

12.61

#1F2C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C73

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C73	#FFFFFF	#000000	##FFFFFF
##1F2C73	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003775

Deuteranopia (green-blind)

#002F72

Tritanopia (blue-blind)

#003E4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2c73;
/* rgb */ color: rgb(31, 44, 115);
/* oklch */ color: oklch(33.0% 0.123 270.3);

Tailwind

colors: {
  custom: {
    50: '#67649c',
    500: '#1f2c73',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c73;
$custom-light: #67649c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c73",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 115
  },
  "hsl": {
    "h": 230.714,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32979,
    "c": 0.12265,
    "h": 270.3
  },
  "luminance": 0.0333
}

Semantic roles & 50–950 ramp

primary

#1F2C73

secondary

#A79847

accent

#C947E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1F2C73

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →